Chainmail, while historically effective against cutting and slashing attacks, is not designed to stop or effectively protect against bullets. The nature of chainmail, consisting of interlinked metal rings, does not provide sufficient coverage or density to halt the penetration of high-velocity bullets.

Bullets fired from firearms have significant kinetic energy and are specifically designed to penetrate and incapacitate targets. When a bullet impacts a solid object, including chainmail, it can easily pass through the gaps between the rings or deform the rings, resulting in penetration.

Modern body armor, designed to protect against bullets, incorporates materials such as Kevlar, ceramics, or metal plates that are specifically engineered to stop and absorb the impact of bullets. These materials offer superior ballistic protection compared to chainmail.

It's important to note that personal protection against firearms requires the use of appropriate modern body armor that meets the necessary ballistic standards and regulations. Relying on historical armor like chainmail for protection against modern firearms is not advised and can be extremely dangerous.

Always prioritize personal safety and follow the laws and regulations of your jurisdiction when considering self-defense options or protective gear.